化工进展2012，Vol.31Issue(3)：552-557,6.
SO_2和H_2O对Y掺杂Mn/TiO_2选择性脱除NO的影响
Impact of SO_2 and H_2O on catalytic performance of Y-doped Mn/TiO_2 in the reduction of NO
刘晓肖 1张舒乐 1钟秦 1姚瑶 1李小海1
作者信息
- 1. 南京理工大学化工学院,江苏南京210094
- 折叠
摘要
Abstract
Y-doped TiO2 support was prepared by sol-gel method,followed by the impregnation of Mn oxides loading to form Mn-Y/TiO2 catalyst.The effects of calcination temperature and space velocity on the performance in the catalytic reduction of NO were studied.And the poisoned performance of anti-SO2,H2O was also investigated.The results showed that the optimal calcination temperature was 500 ℃,catalytic activity increased with the decrease of GHSV.XRD analysis indicates that Y doping could restrain the transfer from anatase phase to rutile,provide better dispersion of active components on catalyst surface,and therefore,increase the catalytic activity.The anti-poisoned performance of Mn-Y/TiO2 was better than Mn-Y/TiO2,under the condition of temperature 180 ℃,space velocity 14000 h-1,the oxygen content 3%,NO concentration 600 μL/L and NH3/NO,NO conversion was improved from 48.2% of Mn/TiO2 to 57.6%.Y doping could enhanced the anti-poisoned capability.FTIR analysis showed that the catalyst poisoning may result from the generation of ammonium sulfate or manganese,yttrium sulfate.关键词
选择性还原NO/SO2和H2O/锰/二氧化钛/Y掺杂Key words
selective reduction of NO/SO2 and H2O/Mn/TiO2/Y-doped分类
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刘晓肖,张舒乐,钟秦,姚瑶,李小海..SO_2和H_2O对Y掺杂Mn/TiO_2选择性脱除NO的影响[J].化工进展,2012,31(3):552-557,6.
